In this paper, the influence of three kinds of metakaolins with different particle sizes on compressive strength of oil cement was investigated from 30℃ to 110℃. The experiment results showed that the particle size, the mixing amount and the curing temperature all have impacts on compressive strength of oil cement. When mixing metakaolin in oil cement, the range of particle size, the mixing amount and the using temperature should be emphasized. If out of this range, the improvement to compressive strength of oil cement became weak, even to impair the compressive strength.